Adhesive resin composition and hot melt adhesive obtained therefrom
AssigneeMitsui Chemicals, Inc.
InventorsHiroto Yasui, Koji Matsunaga
Life of this patent
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AssigneeMitsui Chemicals, Inc.
InventorsHiroto Yasui, Koji Matsunaga
Estimating the term…
Object: To provide adhesive resin compositions improved in heat resistance without deteriorations in adhesive strength and flexibility. Solution: An adhesive resin composition comprises 30 to 98 wt % of an ethylene/vinyl acetate copolymer (a) and 70 to 2 wt % of a propylene resin composition (P) described below (wherein the total of the component (a) and the component (P) is 100 wt %). The propylene resin composition (P) comprises 60 to 0 wt % of a propylene polymer (b) having a melting point of 120 to 170° C. and a melt flow rate of 0.1 to 500 g/10 min, and 40 to 100 wt % of a propylene polymer (c) having a melting point of less than 120° C. or showing no melting points and having a melt flow rate of 0.1 to 500 g/10 min (wherein the total of the component (b) and the component (c) is 100 wt %).
An adhesive resin composition (A) comprising:
An adhesive resin composition (D) comprising 5 to 95 wt % of the adhesive resin composition (A) described in claim 1 and 95 to 5 wt % of an amorphous poly-α-olefin (APO) (d) having a melt viscosity at 190° C. of 1 to 15,000 mPa·s (wherein the total of the component (A) and the component (d) is 100 wt %).
An adhesive resin composition (E) comprising 80 to 99.5 wt % of the adhesive resin composition (A) described in claim 1 or the adhesive resin composition (D) comprising 5 to 95 wt % of the adhesive resin composition (A) described in-claim 1 and 95 to 5 wt % of an amorphous poly-α-olefin (APO) (d) having a melt viscosity at 190° C. of 1 to 15,000 mPa·s (wherein the total of the component (A) and the component (d) is 100 wt %), and 20 to 0.5 wt % of a functionalized propylene polymer (e) (wherein the total of the component (A) or the component (D), and the component (e) is 100 wt %).
Dependencies are inferred from the claim text.